Want to change the ugly select and loading icon in Android

I was told this is default but it looks so ugly and I want it to look better.
The select dropdown, it is dark background with white fonts.
I want it to be white background with dark fonts.
Furthermore, it is hover above and not drop down

However in the browser with ionic serve run, it is not hover above screen. It is a dropdown list.
If can not make it looks better, at least looks like in the browser.

Also, the loading icon is so ugly. Any others choices of loading icon for android?

ANyone has experience the same thing before?

anyone can help or experience this?
Please comment