How to customize ionic image picker CTA

Hello All,

I am using ionic image picker , refer to below link

the default CTA (call to action) is after selecting picture. then selected picture’s color changing to

my expected CTA is , mark a green tick at right down side of the selected picture. How to achieve
this effect?

what i expected is like attached screen shot, but ionic image picker could not make a tick icon
on selected image.

i check all options of image picker , no such option

Any hints will be more than welcome!