Rated 4 out of 5 stars

A very strong candidate replacement for Colorzilla. Some accuracy issues around the "Website Analyzer" feature but the "Library" feature is an excellent addition and very useful for designers or developers.
The add-on is generally very intuitive to use although "bookmarking" colors to the library may cause some initial confusion with other URL bookmarking tools such as XMarks or Firefox Sync.
All things considered, this is a very useful and usable addition to a web designer's kit.

This review is for a previous version of the add-on (0.9.7.1-signed). 

Next step ! Rated 4 out of 5 stars

Too bad it doesn't work on flash application !
See next upgrade :P

This review is for a previous version of the add-on (0.9.7.1-signed). 

Rated 5 out of 5 stars

I love it. A real time saver.
:)
Thank you!

This review is for a previous version of the add-on (0.9.7.1-signed). 

Rated 5 out of 5 stars

Exactly what I was looking for!

This review is for a previous version of the add-on (0.9.7.1-signed). 

Rated 5 out of 5 stars

Brilliant addon! Ive recently changed from colorzilla to this one, alot more features inside. Have you any future plans for adding an option to make color palettes out of the colors, like palette grabber or colorsuckr?

Keep up the great work guys!
Thanks

This review is for a previous version of the add-on (0.9.7.1-signed). 

Rated 5 out of 5 stars

I just installed both Rainbow and Colorzilla and I need them for web development. In my opinion Rainbow is much more useful, because it shows which colour you have selected and then gives you the option to copy the value (rgb, hexadecimal, etc,), which in my case is the main point if I want to use it in other tools or programmes.

This review is for a previous version of the add-on (0.9.6). 

Need rgb and Hex # to BOTH DISPLAY ! Rated 5 out of 5 stars

Excellent !
#1 Could we please have the option to display BOTH the rgb AND Hex # at the same time. And that would mean a COPY BUTTON for each.
#2The rgb does not display completely... the Magnifying icon covers over the last bracket of rgb.
http://img844.imageshack.us/img844/2657/rainbowpickerrgbnotshow.png
Thankyou !

This review is for a previous version of the add-on (0.9.6).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

I'm loving this tool!!
It has support for HSL, and it's really quick at converting units.
And most important, it's released under a free license :)

This review is for a previous version of the add-on (0.9.5). 

Rated 5 out of 5 stars

Simply the best!

________________
www.topsite10.com

This review is for a previous version of the add-on (0.9.5). 

Rated 5 out of 5 stars

Wonderful color grabber. Like Wylbur, I use ubuntu and some eyedrop addons no longer worked in newer firefoxes. Glad I found this one.

This review is for a previous version of the add-on (0.9.5). 

Thumbs Up and Ubuntu Friendly! Rated 5 out of 5 stars

I was using Colorpicker, but it no longer works with Ubuntu. I am really glad that I found Rainbow instead! It has a few more features and works great. I really like the interface, and the zoom area for selecting the pixel of color. Great!

This review is for a previous version of the add-on (0.9.5). 

text colors Rated 4 out of 5 stars

Thank you for this great add on.
One thing I was trying to do with it that doesn't seem to be possible is changing text colors.
It would be great if you could drag from the library over text to change text color. currently it seems you can only change background colors this way

This review is for a previous version of the add-on (0.9.5). 

Rated 3 out of 5 stars

Apperance is cool but results sometimes can be wrong. Now i am removing rainbow then installing colorzilla again.

This review is for a previous version of the add-on (0.9.5). 

Rated 5 out of 5 stars

I find this addon very helpful. I use a number of different colour picker software and plugins but I like this one very much. The simplicity makes it light and fast. I like the bookmark feature and it is a simple solution to a simple query and problem.

This review is for a previous version of the add-on (0.9.5). 

Chinese language support Rated 5 out of 5 stars

I am Hong Tang working in Mozilla online in china. I have seen many web developer here in china loves this addon. It will be nice to support Chinese language when the browser is in chinese, say Firefox zh-CN version. I will be very happy to help on providing chinese text for product description and introduction in chinese. Thanks.

This review is for a previous version of the add-on (0.9.2). 

Replacement for ColorZilla? Rated 5 out of 5 stars

I'm impressed! I wandered over here because ColorZilla has stopped working for me with the latest update, and I must say, I'll be sticking with Rainbow even if ColorZilla patches itself. Useful set of features besides the obligatory Inspector - Website Analyzer is an awesome idea and implementation, and of course the Library, while simple, should be incredibly useful.

This review is for a previous version of the add-on (0.9.2). 

Супер - просто и практично! Rated 5 out of 5 stars

Обалденная вещь для анализа цветов сайта.. короче для тех кто создает web ресурсы.Рекомендую непременно!

This review is for a previous version of the add-on (0.9.2). 

Rated 5 out of 5 stars

Good, if you add zoom it is a perfect replacement for colorzilla

This review is for a previous version of the add-on (0.9). 

Rated 5 out of 5 stars

Oh my! Thank you! Works great with 3.6. Needed a replacement for ColorZilla since it would not work with Firefox upgrade. Sweet! ...and it works even better than ColorZilla.

This review is for a previous version of the add-on (0.8.3). 

clever Rated 5 out of 5 stars

Great idea, and the most recent version automatically adapts UI controls to alternate Firefox themes (dark ones too). Clever implementation and works great. Thanks!

This review is for a previous version of the add-on (0.8.3).