**ShowPlay Reference Manual, Chapter 4 (StimulusEvents): backcolor**
===== Backcolor -- Change the default back color =====

The BACKCOLOR stimulus event lets you change the screen background color parameter during your Showplay real-time program.  The syntax for the BACKCOLOR event is:
   backcolor          stim_id   stim_flg     start_time   colorRGBvalue
COLORRGBVALUE is a 24-bit color value, specifying red, green, blue values in 8-bits each.  These color values must be entered as decimal integer values in the stimulus table.  A table of some common color values is:
   RGBdecimal     RGBhex          Color
           0          0h          Black
    16777215    0ffffffh          White
         255        0ffh          Blue
       65280      0ff00h          Green
    16711680    0ff0000h          Red

RGB values can be entered as hexidecimal numbers on CIGAL command lines, which can be useful for converting 24 bit colors to decimal values.

Note: The BACKCOLOR event does not change the display -- it just changes that back_color parameter.  The display will change to that color the next time the screen is erased.

**See Also:**\\
[[jvs:cigal:showplay:manual:chapter1:ppf|Paradigm parameter file]], 
[[jvs:cigal:showplay:manual:chapter1:stimulustable|Stimulus table]]

[[jvs:cigal|CIGAL Home]], 
[[jvs:cigal:manual|CIGAL Manual]], 
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[[jvs:cigal:showplay:manual|ShowPlay Manual]], 
[[jvs:cigal:showplay:manual:chapter4|Stimulus Event List]], 
[[jvs:cigal:showplay:manual:help|Manual Help]]