Font size in messages is too small (message-app)

On BQ Aquaris 4.5 when using the message-app applications
I do think that some parts of the messages (SMS messages)
are written using a very small font.

For instance: the last sentence in the main messages list,
the "time" inside of a message when you select a contact is written
very small , it seems to be light green in a green box: it's almost unreadable,
I need to remove my glasses and look at a very small distance
to read the Time (!)

How to ask designers to make things more adapted for people
that have poor eyesight . Well I personally can see very well many things
on the phone screen but not so small letters. And... it tires view
for everybody, I know what I say, I have 40 years of professional
computing experience, save your eyes! (and sorry for my english). Thanks.