property Thumbnail.Transparency as Long
Specifies the transparency to display the text in the control.

TypeDescription
Long A long expression that specifies the percent of transparency used to paint the caption. The value should be from 0 to 100, where 0 means opaque.
By default, the Transparency property is 0, which means that the caption is opaque. Use the Caption property to display a caption on the thumbnail control. The SingleCaption property indicates the expression to generate the HTML caption to be displayed on the thumbnail, when the control shows a single thumbnail ( for instance you filter and you got a single result ). Use the InputFile property to specify the file to display its thumbnail. Use the OutputFile property to save the thumbnail picture. Use the Font property to specify the font to display the caption on the thumbnail. Use the ForeColor property to specify the control's foreground color. Use the WordWrap property to wrap the caption on the control.