Sampled from 4 of STL & 3D Model Viewer - Mes3D's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#040404 bg
#272727
#8C4434 accent
#FFFFFF text
View and inspect 3D models directly on your device with Mes3D. Mes3D is a fast, lightweight 3D model viewer for opening and exploring common 3D file formats. Rotate, zoom, measure, analyze, and review your models with simple touch controls. Key Features Import 3D Files Open models from Files, cloud storage, or other apps. Mes3D supports STL, STEP, STP, OBJ, glTF, GLB, USDZ, 3MF, AMF, PLY, OFF, 3DS, ZIP, and more. No conversion required. Easy 3D Navigation Rotate, pan, and zoom smoothly to inspect your model from every angle. Quickly switch between front, side, top, and perspective views. View Original Colors and Textures Models with embedded colors or textures can be displayed as intended. Customize the viewer with wireframe, background, and color settings. Measure and Analyze Measure distances between two points and view bounding dimensions, volume, surface area, and estimated pr…
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 9 screenshots above are STL & 3D Model Viewer - Mes3D's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: STL & 3D Model Viewer - Mes3D runs a dark set with one background colour (#040404) carried across every screenshot — the listing reads as a single poster when the shots sit side by side in search results. The accent colour we picked up, #8C4434, is the one to reuse for badges, arrows and highlighted words if you borrow this look. Hit Use this style to open the editor with these exact colours and drop your own screenshot in.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Developer Tools apps approach the same problem? Browse more Developer Tools apps in the showcase.
Open LaunchShots and design your App Store & Google Play screenshots — pick a device frame, drop captions, ship in minutes. Free, in your browser.
Open the screenshot editor →Closest background + accent colours among the listings we've analysed — useful when you want to see the same palette handled by a different team.