The different colors specify how many potential matches were found for that transaction. If the Match is green that means that QuickBooks found only one transactions that matches. If the Match is grey that means that QuickBooks found at least two transactions that could be a match.
Resolution for 'as grey issue: 'In Banking, why do some “Match” s come up as grey and some green?' available: Yes.
The as grey issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the as grey issue yourself by looking for a resolution described in the article. If it is a complex as grey issue or you are unable to solve the issue, you may contact us by clicking here or by using other as grey support options.
For more information about resolving issues related to as grey in Quickbooks/QBO or to get support for the issue 'In Banking, why do some “Match” s come up as grey and some green?', click the link below: