rgb r and b are working in reverse fashion... about skia-python

[HinTak]

I am not able to reproduce this with the upcoming m124 (see #236 to download artefact under the action tab) . Please supply/confirm:

• a full example
• your arch - I am on x86_64 - are you running ubuntu on a pi (aarch64) or something unusual?
• try m124 if you can - we'd unlikely to go back to m87.

I try SetRGB then ColorGetA(n) etc for the different channels, and also modified the code in #167 to draw with set colors. Looks okay.

Also, note there is no named argument matching, I think - i.e.if you do ColorSetRGB(b=..., r=..., g=...) in the wrong order, you get wrong color. It is also a bad idea to use Color as a variable name, for possible collisions...