Click the Insert tab to insert a signed picture.

Please click to enter a picture description.

Double-click the picture

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Click the color in the picture format and select 50% black and white recolor, as shown in the figure.

Please click to enter a picture description.

Then select a color in the picture format and select "Set Transparent Color", as shown in the figure.

Please click to enter a picture description.

Click on the picture.

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Right-click to set the text wrapping mode of the picture to "float above text"

Please click to enter a picture description.

Just adjust the size and position of the picture.

Please click to enter a picture description.