Fix f-string in color error message

[venkatram-dev]

Fix issue #8636

[pytorch-bot]

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🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/vision/8639

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❌ 1 New Failure, 4 Unrelated Failures

As of commit 1a8a613 with merge base 838ad6c ():

NEW FAILURE - The following job has failed:

• Tests / unittests-linux (3.12, linux.12xlarge, cpu) / linux-job (gh)
  test/test_datasets_video_utils.py::TestVideo::test_video_clips

FLAKY - The following jobs failed but were likely due to flakiness present on trunk:

• CMake / windows (windows.4xlarge, cpu) / windows-job (gh) (detected as infra flaky with no log or failing log classifier)
• Tests / unittests-windows (3.12, windows.4xlarge, cpu) / windows-job (gh) (detected as infra flaky with no log or failing log classifier)
• Tests / unittests-windows (3.9, windows.4xlarge, cpu) / windows-job (gh) (detected as infra flaky with no log or failing log classifier)

BROKEN TRUNK - The following job failed but were present on the merge base:

👉 Rebase onto the `viable/strict` branch to avoid these failures

• Tests / unittests-windows (3.9, windows.g5.4xlarge.nvidia.gpu, cuda, 11.8) / windows-job (gh) (trunk failure)
  AttributeError: '_OpNamespace' 'image' object has no attribute '_jpeg_version'

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[NicolasHug]

Thanks @venkatram-dev