 # Random Color on Background

I wanted to have random color blinking on the background. I found two methods:

1.) as first action in a mode draw a rectangle with random color. This may look like this

``````...
def draw(screen, etc):
pygame.draw.rect(screen, ((random.randrange(0, 2) * 255),(random.randrange(0, 2) * 255),(random.randrange(0, 2) * 255)), ((0,0),(1280,720)), 0)
...
``````

2.) Or change in /root/ETC_Mother/etc_system.py the definition of color_picker_bg, which is at the end of the file:

``````def color_picker_bg( self ):
c = float(self.knob5)
if c < .99 :
r = (1 - (math.cos(c * 3 * math.pi) * .5 + .5)) * c
g = (1 - (math.cos(c * 7 * math.pi) * .5 + .5)) * c
b = (1 - (math.cos(c * 11 * math.pi) * .5 + .5)) * c
color = (r * 255,g * 255,b * 255)

if c > .98 :
r = random.randrange(0, 2) * 255
g = random.randrange(0, 2) * 255
b = random.randrange(0, 2) * 255
color = (r,g,b)
self.bg_color = color
return color
``````

This way the bg-color knob will switch to random if turned fully clockwise.

1 Like

awesome. thanks!

I am still looking for the possibility to have the background slowly fading through the colours. I would know how to achieve this with printing the background rectangle within the mode. But I would like to have it as a possible selection on the knob5. Any idea?

Hi @fanwander I have been wondering this same thing: “I am still looking for the possibility to have the background slowly fading through the colours.” Have you found a way to achieve this in the year since this post?

No, not yet. But I did not follow this idea until now.

OK - I’m going to explore the idea too. I’ll let you know if I figure anything out.