A great way to figure out the gamma that you’d like for RGB LEDs is to set up a color fade and adjust the gamma until there is apparently uniform brightness across the strip.

I want to use Find and Replace to change the color throughout, but I don't know how to specify the custom color in the Find box. Is there a way to discover the RGB values of this custom color?

A VB6 or (Visual Basic 6) program can be used to find RGB values of a color. Some knowledge of programming concepts and languages such as Visual Basic is required to write a program code in VB6. Basic ...

If you would like to know HTML, HEX, RGB, CMYK and HSV values of a Color, then portable freeware Pixie will be able to help you.