This will allow you to see the difference within SolidWorks, but such a difference will not be obvious in any printouts or PDFs. What color to use? Well, if one still wants to know the difference between inserted and non inserted dimensions when editing the drawing, I recommend not picking black. Simply change the color for non inserted dimensions within the System Options. So, here's a quick trick to address the need to have dimensions appear the same. This may be not be desirable for some situations. When this mode is turned on, the user gets their colors right for other lines, but dimensions appear as both black and grey. So, many users rely on the Color Display Mode. When this mode is turned off, all colors are shown as system status (system defines the color based on their status instead of other settings). These colors carry over to printouts while in Color Display Mode is on. Inserted dimensions are black and non inserted dimensions are grey, by default. By default, they appear as two difference colors. Many times both are necessary on a drawing. Non inserted dimensions are created within the drawing itself. Inserted dimensions are called such because they are inserted from the model. On drawings, the two main types of dimensions are inserted (driving) and non inserted (driven). SolidWorks has many default colors for different types of dimensions. Remastered from SolidWorks Legion article entitled Color for non inserted dimensions.