Do you have a thermostat that is easier for seniors to read? Small black lettering on a dark blue background doesn't work well when trying to program/set.

Yes we do, If it is a 24v. system the thermostat we often use is a Non-programable, heat / cool thermostat with large numbers on a blue display. We have used it a couple times in the past if a customer has had a seeing impairment and the response has been great. Attached is a link to their website. https://pro1iaq.com/products/thermostats

Yes, they do, you can get a greenish background or plain white and black depends on the model