Change the look and feel of Microsoft 365 - Microsoft Support
When Use system setting is selected, Microsoft 365 will choose between White and Black themes based on if Windows is in light or dark mode. You can choose your Windows look in Windows 11 by launching the Settings app and navigating to Personalization > Colors > Choose your mode.
Use color and contrast for accessibility in Microsoft 365
If you want to reduce eye strain in a low or no light environment, or if you have a low vision or photosensitivity condition, you can switch to a dark color mode. Once activated, the dark color mode will expand across the Windows elements such as Taskbar, Start menu, Action Center, Windows Console, File Explorer, and settings.
Make your PowerPoint presentations accessible to people with ...
In this topic, you learn, for example, how to work with the Accessibility Checker to tackle accessibility issues while you're creating your presentation. You'll also learn how to add alt texts to images so that people using screen readers are able to listen to what the image is all about.
Change the color, style, or weight of a line - Microsoft Support
You can change the look of a line shape by changing its color, line style, or weight. If you are using Excel, Outlook, Word, or PowerPoint, you can apply a predefined Quick Style to quickly change the look of your line. What do you want to do?
Use Eyedropper to match colors on your slide - Microsoft Support
Use the new Eyedropper tool in PowerPoint to choose a color that matches a screen pixel and apply that color to a shape or other object.
Add a fill or effect to a shape or text box - Microsoft Support
You can change the look of a shape or text box by changing its fill or by adding effects to it, such as shadows, glows, reflections, soft edges, bevels, and three-dimensional (3-D) rotations. A fill is a color, pattern, texture, picture, or gradient applied to the interior of a shape.
Change the colors in a text box or shape - Microsoft Support
In a text box or shape, you can quickly change the color of text, the inside (fill) color, or the color of the border. Let's select the shape—the Drawing Tools appear in the ribbon, with the Format tab active. Here's the same shape after we changed the border to orange, the fill to a light green, and the text to black.
The new look of Office - Microsoft Support
This means you'll see Office's White theme if your system is set to Light theme, and Office's Black theme if it's set to Dark theme. You can return to Colorful by navigating to File > Account > Office Theme. Learn more
Tips for creating and delivering an effective presentation
Use high contrast between background color and text color. Themes automatically set the contrast between a light background with dark colored text or dark background with light colored text. See Combining colors in PowerPoint – Mistakes to avoid. Check the spelling and grammar.
Apply a template to an existing presentation - Microsoft Support
When you want to apply a template, either to a new or existing presentation, start fresh with a blank presentation. If you need help knowing where to put a template file so you can apply it as described here, see Where template files belong below. Select File > New.
Understand the difference between PowerPoint templates and …
Dark-colored text is shown on a light background (and vice versa), so that contrast is strong for ease of reading. Here are four different themes applied to the same slide: To choose a theme for your presentation