Feat: Implement custom primary color

[Biowulf21]

Hi @sadespresso, this is the feature implementation for #105 .

This is my first time submitting a PR for a FOSS repo, so I do apologize in advance if my code is not up to FOSS standard. I'd like to work on this project on my spare time, as I see a lot of potential in this application 😄 .

[sadespresso]

Hello @Biowulf21, thank you for taking your time to implement this feature.

It would be more appreciated if we discuss before jumping to implementations. As this is a very young project, I have so many things in mind, and trying my best to list them down in the issues.

Moving forward with your PR, we have few problems.

• First of all, colornames package seem to support only English, but Flow plans to support multiple languages. So it's best if we define the names locally, or find a library that supports multiple languages. Not having names is fine too.
• As for the color picker, I was thinking to handpick number of colors and offer them, and they would have different perceived brightness in light/dark mode. This makes localization more easy, and allows us to create different app icons for each color in iOS.

[sadespresso]

This, for example..

[sadespresso]

I will have this in Flow if you make following changes:

• Remove colornames package, and not use color names for now or use a localized color name provider
• (MAYBE) not require restart after changing theme color. You can write sth in Flow (the main app widget) and have it transcend the changes. Nice to have this, but not necessary.
• Provide a video demonstrating the implemented feature

[sadespresso]

Again, thank you for the PR!

Let me know if you want to proceed with the suggestions and review

[Biowulf21]

Hello, @sadespresso. I'll implement these changes as soon as I get home. I'm out of the house at the moment.

As for communicating features moving forward, I'd like to connect with you on discord if that's alright with you.

Thanks.

[sadespresso]

:D :D

We have a discord server, and you can find me, or my account in there!

[Biowulf21]

Hello @sadespresso, can you please point me into the right direction as to which color picker we'll be using? I can refactor my current implementation if you already have a package in mind.

As for the other changes you requested, I've already gone through them. Please let me know if you have any questions/suggestions on the implementation.

Lastly, here is the video demo that you requested for the feature:

Thanks.

[sadespresso]

Hello @Biowulf21

Thank you so much for the work! I really appreciate it.

I will check it out once I have time, should be soon.

[sadespresso]

LGTM.

Thank you!

---

In the future, I plan to give option to use dynamic colors. It's the new Android 13 thing I believe...

Also, in the future, we'd have much more simpler color selector.