Improve app color scheme

[riesinger]

The purple on-black color scheme has a contrast ratio of < 1.5. To meet basic design recommendations, it should at least have a ratio of 4.5.

We might in fact go for a light color scheme, our chosen shade of purple has much more contrast on say rgb(232, 232, 232) (4.9, which meets the AA recommendation).

Aside from recommendations, I personally find the purple almost unreadable on the darker shade of grey we use. Also, the colors somehow "hurt" the eye.

@mheidinger what do you think of a light-theme? Otherwise we'd definitively have to make our greys darker and the purple lighter.

[mheidinger]

I would personally prefer a dark theme but both is fine for me. Do you want to test with some colors (should be only the ones in the main.dart file)?
We would then need to adjust the logo and the tutorial images. I think for the paper the existing colors should be fine. We can explain that stuff in the implementation section.

[mheidinger]

Also I wouln't spend way too much time on this... The colors won't get us a bad grade but an empty paper on the other hand 🤔 😜

[riesinger]

Do you want to test with some colors (should be only the ones in the main.dart file)?

I will try to sign the APK (after working on the paper for a bit), if that does not work, you'll have to try that unfortunately...

We would then need to adjust the logo and the tutorial images. I think for the paper the existing colors should be fine. We can explain that stuff in the implementation section.

Jep, that's exactly what I thought

[riesinger]

Also I wouln't spend way too much time on this... The colors won't get us a bad grade but an empty paper on the other hand thinking stuck_out_tongue_winking_eye

Super true. This might be some "last-minute" changes. Going to work on the paper now

[mheidinger]

I will try to sign the APK

Why do you want to sign the APK? I thought you could still run the app on your phone?

[riesinger]

Nope, not anymore.

Edit: Well running: yes, installing new versions: no