Here are Colombo hotels whose restaurants explicitly offer children’s/kids’ menus or kid-friendly dining (sources linked):

• Shangri‑La Colombo — family dining benefits (kids dine free/discounts at the all‑day restaurant; kids facilities and children’s buffet noted). (shangri-la.com)
• Cinnamon Grand Colombo — kids’ meals / a dedicated children’s menu and kids‑club offerings across its F&B outlets. (cinnamonhotels.azurewebsites.net)
• Cinnamon Lakeside Colombo — children’s menu and kid‑friendly dining at its main restaurants (children’s buffet / kids’ options listed). (cinnamonlakeside.hotelcolombo.org)
• Hilton Colombo — hotels/booking listings show a children’s menu and kid‑friendly dining options in hotel restaurants. (hilton.hotelcolombo.org)
• Taj Samudra Colombo — family/kid‑friendly dining features noted (kids’ meals / kid‑friendly buffets listed on hotel/travel pages). (tajhotels.com)
• The Kingsbury Colombo — children’s menu / kids’ meals and family dining promotions are advertised for its restaurants. (thekingsburyhotel.com)
• Jetwing Colombo Seven — explicit child policy referencing a special kids’ menu and children’s dining rates. (jetwinghotels.com)
• Mövenpick (Mövenpick Colombo) — Mövenpick’s family programme and hotel pages describe children’s/“Power Bites” kids’ menus at outlets. (movenpick.accor.com)
• NH Collection Colombo — restaurant pages / hotel listings note “children’s options” and high chairs/kids’ meals available. (nh-hotels.com)
• Galle Face Hotel (Colombo) — family meal policy (children’s pricing) and dining outlets that accommodate kids (booking/official dining pages note family/kids options). (gallefacehotel.com)

Note: hotel menus, promotions and age/discount policies change frequently. If you want, I can check the current kids’ menu or the latest dining policy for any particular hotel on this list (or add other hotels).