Date Picker in Dark Mode

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Issue Description

node, npm, react-native, react and native-base version, expo version if used, xcode version

node: 10.16.3 npm: 6.9.0 react-native: 0.61.1 react: 16.9.0 native-base: 2.13.8 expo: none (but snack created, see below) xcode: 11

Expected behaviour

When dark mode is turned on the date picker will show all months/dates/years as it does in light mode.

Actual behaviour

Right now I can only see November and December for months, 17th to the 20th for dates and 2020+ for years when dark mode is turned on. The other options appear to still be part of the picker, but the associated text is not visible.

Steps to reproduce

Turn on dark mode for the device Open the date picker

Snack to reproduce the issue (as long as the device is in dark mode): https://snack.expo.io/@kosullivan/nativebase-date-picker-dark-mode

How to enable dark mode: https://www.howtogeek.com/440078/how-to-enable-dark-mode-on-your-iphone-and-ipad/

Is the bug present in both iOS and Android or in any one of them?

iOS only

Any other additional info which would help us debug the issue quicker.

Only happens when device is in dark mode. Normal mode works fine. It seems that the selectable items are not visible, but non-selectable are. In our case the picker is only for past dates which is why only Nov/Dec are shown for 2019, but they are not selectable).

###Important

If you want your issue to be looked at quicker, attach a snack reproducible with your issue. Makes it easier for us!

[Fokus969]

            <DatePicker
              ...
              customStyles={{
                ...
                datePicker:{backgroundColor: '#222'}
              }}
          />

[BogdanTaranenko]

any progress?