UI: text_color animation

[lachlantula]

Hi all,
I’m developing an application with the ui module, but have realised something that I’m not sure is either intentional or just overlooked; background_color can be animated, whilst text_color can’t.
Here’s an example. You can see that the text colour-changing is out of sync with the smooth background. The text changes to contrast with the background at the time.

Here is my code for the colour-changing functionality:

while True:
    r = lambda: random.randint(0, 255)
    colour = '%02X%02X%02X' % (r(), r(), r())
    def determine_colour2(colour):
        (r, g, b) = (colour[:2], colour[2:4], colour[4:])
        # This next bit is pretty complicated, but its basically just an algorithm to find out what colour is needed for text
        if 1 - (int(r, 16) * 0.299 + int(g, 16) * 0.587 + int(b, 16) * 0.114) / 255 < 0.5:
            return '333333'
        else:
            return 'efefef'
    colour2 = determine_colour2(colour)  
    def animation():
        v.background_color = colour
        v['chrome']['logo'].text_color = colour2
    ui.animate(animation, duration = 3)
    time.sleep(3)

If anyone can let me know if I’m doing something wrong or if this functionality isn’t implemented into Pythonista at all, it would be appreciated. Thanks!