Hello, developers. “I have been using psycopy to write programs for over a year, and I appreciate your development of such easy-to-use software. However, recently, when I wrote a color discrimination task, I found that in builder mode, because there is no” RGB255 “in the color space option, the RGB255 value in the condition file cannot be directly used to set the color of the stimulus.”. So it would be great if this option could be added as soon as possible in future versions. Finally, I would like to express my sincere gratitude and best wishes for your efforts.