0.15.0.0-rc2 still has minor GUI issues on Windows HiDPI

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A few remaining GUI issues with Dash Core 0.15.0.0-rc2 under Windows 10 18363.592 x64 with 2880x1620 panel @ 150% scaling.

1. Splash screen appears blurry/scaled regardless of which theme is selected:

2. Contrast issues also raised in 0.15.0.0-rc1 Traditional theme could use a smidge more contrast (branding) #3248 in the traditional theme. Note that font size is correct here:

3. Light theme finally looks good under Windows default settings without any scaling overrides applied! Tiny text problem (QT font issues no matter the display option #2565) and truncated text is gone, but the GUI text is now scaled to 200% while system is set to 150%, so it looks comically large in contrast to system text, which can be seen in the menu. System scaling should be applied to all text, like in the traditional theme. Logo in top right corner also remains blurry/scaled.

4. Dark theme has some issues with dark text on dark background, text size and tab colours, similar to 0.15.0.0-rc1 UI/UX Dark Mode console text #3242 :

[PastaPastaPasta]

@strophy Have these been fully resolved? I believe so, but please reopen if I'm wrong