I have a deck by Diana Cooper it's called Angels of light, I think I have the first edition thats out of print now, (brown card back with a gold angel)but I'm sure the version now has a colour image of an archangel, the cards just have writing on them and an affirmation at the bottom.
I actually love these cards even though they have no imagery on them, I usually draw a card in the morning (when I remember) and will keep the affirmation in mind during the day and if I feel I'm thinking to negatively about anything I'll just keep repeating the affirmation I drew in the morning.
I also have her Unicorn deck aswell and those have affirmations too, I actually think all Diana Coopers decks have affirmations, she has a pick a day card on her website, so you can pick a card and see if her decks are something you might like.
You may also like Conscious Spirit by Kim Dryer, they have affirmations on the cards and the colours and imagery in this deck is wonderful.