What I've done for a certain spot in my house is to make a wall hanging for each season with the same measurements. Maybe you could personalize theirs? Not with colours but with their life happenings? Mine started out with a squirrel on a sled for one month... a snowman with a wheelbarrow of hearts for valentines.... a leprechaun with shamrocks for St. Pat's etc. just to give you a few ideas.
BUT I have also seen ONE scene done with the four different seasons...but after a quick search I haven't been able to place that pattern, will keep looking.