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Indeed, the PLUGINS-CAD software includes this tool for free.


AutoCAD ByBlock yellow hatches – set blocks to ByBlock and hatches to yellow

Purpose: Set block elements to ByBlock and force solid hatches to yellow.
Note: This plugin updates internal block colors and forces hatches to yellow.
Processing mode: DWG files are processed one by one (not all at once).

This module performs an AutoCAD ByBlock yellow hatches update on your drawing.
It standardizes internal block colors by switching all internal entities to ByBlock
and applies a highlight color to hatches. As a result, block colors can be controlled from the
insertion layer, while solid hatches remain clearly visible in yellow.

This is useful when you want to clean up inconsistent block colors and still keep fill areas
easy to identify. You can combine this color normalization with other
AutoCAD automation tools.
For more information about colors, ByLayer and ByBlock behaviors, you can also check the

official Autodesk documentation
.

How to use the AutoCAD ByBlock yellow hatches tool

  1. Opening the DWG

    First, the software opens the DWG to process. The current drawing becomes the working file
    for the color update.

    Opening the DWG before AutoCAD ByBlock yellow hatches processing
    Loading the drawing to modify.
  2. Setting internal entities to ByBlock

    Next, inside each block, all entities (lines, polylines, text, etc.) are forced to use the
    ByBlock color. This removes fixed colors and prepares blocks to follow the color
    of the layer where they are inserted.

    Applying ByBlock color inside AutoCAD blocks
    Standardization: all internal block elements use ByBlock.
  3. Setting hatch color to yellow

    Then, solid hatches are forced to yellow. This makes fill areas, highlight zones and safety
    regions immediately recognizable, even when block or layer colors change.

    AutoCAD ByBlock yellow hatches: forcing solid hatches to yellow
    Solid hatches become yellow to remain visible.
  4. Saving the DWG

    Finally, the DWG is saved with normalized block colors (ByBlock) and yellow hatches.
    The drawing is now easier to manage: block colors are controlled externally, while fills remain
    consistently highlighted.

    Saving the DWG after AutoCAD ByBlock yellow hatches color update
    Final drawing saved with controlled color settings.

Why use AutoCAD ByBlock yellow hatches?

Using an AutoCAD ByBlock yellow hatches workflow helps you keep a clear separation
between block structure and visual emphasis. Blocks become easy to recolor via layers, while
important hatch zones stay visible and consistent. This simplifies plotting, improves readability
and aligns your DWGs with clean CAD standards.

Download the software for free

Indeed, the PLUGINS-CAD software includes this tool for free.