Cream trousers have had a proper rehabilitation. For years they meant one thing, a linen pair that crumpled the moment you sat down and showed every mark within the hour, which is why so many of us wrote them off as impractical. The fabrics and cuts around now are sturdier and better thought through, and that has made the colour far more wearable than it used to be, not less. I think that counts as progress.
In the shop, check the fabric before anything else. Hold it up to the light. If you can see your hand through it, you'll need to think about lining or what you wear underneath, because cream shows up thin fabric in a way navy or black never will. Check the inside leg against your own, standing in flats, because cream trousers that sit a half inch short look unfinished in a way darker colours forgive. Check the waistband sits where you want it rather than where the pattern cutter decided, and run a thumb over the seams at the pocket and the inside leg, since that's where cheap cream fabric tends to pucker and show the stitching through.
Cream is not the right choice for a day you know will involve a lot of sitting on grass, eating something with sauce, or standing near small children with felt tips. It is also not kind to anyone who wants trousers to disguise a meal. That's not a flaw in the trousers, it's just the nature of a pale colour, and worth being honest with yourself about before you buy. They are, however, a genuinely good choice for anything where you want to look put together without looking like you tried too hard.
Keep them away from anything with heavy ink, from new dark denim that hasn't been washed a few times, and from bags or belts that bleed dye when they get damp, a red tote left resting against the hip has ended more than one pair of cream trousers early. On the body they look cleanest against navy, soft grey, white and the warmer neutrals, and they struggle next to anything too bright or too clashing in undertone.
Over months, good cream trousers age by softening rather than greying, as long as you wash them promptly rather than letting marks set, and avoid tumble drying unless the label is clear that it's fine. A gentle wash, worn inside out, keeps the colour even. I'd start with a warm, slightly buttery cream rather than a stark white toned one. It forgives more and still looks deliberate.